package com.da.bio;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class BIOServer {
    public static void main(String[] args) throws Exception {
        //线程池机制
        //1. 创建一个线程池
        //2. 如果有客户端连接，就创建一个线程，与之通讯(单独写一个方法)
        ExecutorService es = Executors.newCachedThreadPool();
        //创建ServerSocket
        ServerSocket serverSocket = new ServerSocket(6666);
        System.out.println("服务器启动了");

        while (true) {
            System.out.println(
                "线程信息 id =" + Thread.currentThread().getId() + " 名字=" + Thread.currentThread().getName());
            //监听，等待客户端连接
            System.out.println("等待连接....");
            final Socket socket = serverSocket.accept();
            System.out.println("连接到一个客户端");
            //就创建一个线程，与之通讯(单独写一个方法)
            es.execute(() -> {
                //可以和客户端通讯
                handler(socket);
            });
        }
    }

    //编写一个handler方法，和客户端通讯
    private static void handler(Socket socket) {
        try (InputStream inputStream = socket.getInputStream()) {
            System.out.println(
                "线程信息 id =" + Thread.currentThread().getId() + " 名字=" + Thread.currentThread().getName());
            byte[] bytes = new byte[1024];
            //循环的读取客户端发送的数据
            while (true) {
                System.out.println(
                    "线程信息 id =" + Thread.currentThread().getId() + " 名字=" + Thread.currentThread().getName());
                System.out.println("read....");
                int count = inputStream.read(bytes);
                if (count != -1) {
                    //输出客户端发送的数据
                    System.out.println(new String(bytes, 0, count));
                } else {
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
